Tractor control



I J. R. KENDRICK TRACTOR CONTROL sept, 18, 1923. wmmm Filed Feb. 14 1923 Patented Sept. 18, 1923.

JAMES ROBERT KENDRIGK, OF ESSEX, ONTARIO, CANADA.

' TRACTOR CONTROL.

Application filed. February 14, 1923. Serial No. 618,986.

To all whom itmay concern:

Be it known that I, JAMES Ronnnr IEN- BRICK, asubjectof the King of Great Britain, residing at the town of Essex, in the Province of Ontario, in the Dominion of Canada, have invented certain new and useful-Improvements in Tractor Controls, of which the following is a specification.

The invention relates to improvements in tractor control as described in the present specification and illustrated in the accompanying drawing that forms part. of the same. a

The invention consists essentially of the novel features of construction and arrange.-

ment of parts whereby the clutch lever and throttle of a tractor may be independently manipulated-bye rein extending from the device. 7

This device'is' particularly adapted for use on a tractor providing motive power for a threshing machine, or in any instance where ower. is transmittedfrom the tractor to .anot er instrument by means of a belt or such like connection. The operator situated on the thresher, or other instrument of transmitted power, may from this point-control its mechanism by use of the rein,

through its connection with the clutch lever and throttle of the tractor.

In the drawing, Figural is a perspective view of the invention, showing the tractor clutch lever held'in gear; the throttle lever being in its normal position. n

Figure 2 1s a sectional view-taken on the line 1'-1 of Figure land illustrates more particularly the automatic releasingmechanism of the device. 1

' Like numerals of reference indicate corresponding parts in each figure.

j Referring to the drawing; 1 designates the tractor clutch lever, such lever'being normally manually operable; said lever-con trolling the communication between the mo tor and the tranmission, and is held out'of L gear by a spring, wh ch spring 18 11Gb shown in the drawing .as; it does not constitute a partof the present invention.

- ,2 isthe throttle lever of the carburetor 3, which regulatesthe speed of the motor: a direct connection being eifectedwith said lever inrplace ofto the conventional manual means of operation. Though this form of connection is'deemed-for the purpose of this invention to be the preferred-form of construction; such-connectionmay be varied to suit any special requirement. 7 i

4 a bracket which supports the various worklng parts and which may be attached to the tractor in any convenient manner, said bracket consisting of a metal strap having bent ends 5 and 6. i

7 is a shaft rotatably supported in the bracket 1 substantially as shown. One of the projecting ends of said shaft being in the form of a crank as at 8 for communicating circular motion. 9 is a rod pivotally connected at one end to the throttle lever 2 ofthe carburetor and the other'end is constructed with a slotted piece IOintegralwith or secured thereto. The end of thecrank 8 slides in the slotted piece 10, thuspermitting partial rotation of said shaft without imparting movement to the rod 9. Upon suflicient rotation of said shaft to bring said crank end into abutment with the end 11 of the slot, further rotation thereof will impart longitudinal movement tosaid rod, thus actuating the throttle.

12 is a rein arm of convenient length keyed upon the shaft 7 adjacent to the outer face of the end member 5 of the bracket 4:. In tegral with or secured to said arm is a minor arm 13. r

14 is arein secured to the arm 12 and extending therefrom for a suitable length; said rein being constructed of rope or other suitable material.

15 is a ratchet wheel rotatably mounted upon the shaft 7 adjacent. to said rein arm and movable in relation thereto. The said ratchet wheel is prevented from moving endwise by a collar 16 rigidly secured on the end of said shaft.

17 is a spring held ratchet aifixedto the rein arm 12 and engaging the ratchet wheel teeth thus effecting simultaneous movement of said ratchet wheel with said arm 12 in the direction ofthepull on said rein.

' Integral with or secured to said ratchet wheel is an extension 18 having a pin end.

This extension constitutes a crank of ra given throw.

19 is -.a connecting rod, of convenient length one end of which is carried by the pin terminus of the ext nsion 18. r The other end 20 is detachably secured to the clutch lever 1 of the tractor by means ofa slot therein, thus engaging a pin extension from said clutch lever as at 21.

22 is a pawl support integral with or secured to the end 5' of the brackets: and being spacedparallel therewith ;'said support carend of said slot.

'rying a pawl 23 pivotally mounted thereon block 28 whichhas considerable "movement" therein. Interposed betweenthe outer end of said slot andsaid block is a helical spring 29 [which is adapted to exert a pressure on said block to hold it normally to .the inner Projecting-- from the block 28 into the pa hway of the cam plate 26 the pawl is pin 30 which is adapted upon the angular movement of the arm 13 in the direction of said pawl to engage said cam plate therev V ofand disengage said pawl from the ratchet I wheel.

Upon reverse movement of said arm 13 the pm of the block travels over the reverse side of the cam plate working against the spring pressure.

31 is a comparatively large spring coiled about thelaxis of the rein arm 12 and is adapted to exert pressure in the opposite direction to that of the pull of the rein.

In the operation of this invention the connectingarm islfirst attached to the clutch lever by engaging the slotted end 20 on the pin extension of the clutch lever 1." As the clutch is normally out of gear the operator desiring to engage same" simply pulls upon the rein l4, effecting the movement of the arm 12 which simultaneously voperates the ratchet wheel 15 through the ratchet 1 7 engaging the teeth th reof. As the connecting rod 19 is attached to said clutch lever and to said ratchet wheel by means of the crank extension 18, said clutch lever is thus operated against its spring pressure until'it is firmly in gear. The spring actuated pawl 23 which is carried by the stationary support 22 of the bracket 4 engages the ratchet wheel teeth as it rotates, thus preventing reverse movement thereof. 7

It will be apparent that in orderto adjust the throttle it is simply necessary to "slacken the rein'l i, which permits the arm 12 to move in the reverse direction through the spring pressurethe shaft? being keyed to said arm 12' is actuated thereby andthe crank end 8 thereof is also rotated. The

crank end 8 of said shaft is permitted to slide in the slot-ted end piece 10 of the rod 9 for a distance equal to the angular movement required to engage the clutch, wheresary to retract therein, which rotates the minor arm 13 an.d*as said arm rotates the pin 30 is brought intoengagementwith'the pawl cam plate 26 forcing "the pawl out.- ivar'dly thus releasing the ratchet wheel which through its connections-releases' the clutchlever. 'lVhen the arm" 13 movesin thejopposite direction again said pin 30' travels over the other side of said cam p'late of the pawl 23.

What Iclaim is 1. In a tractor control, a bracketadapted for attachment to a tractor; a shaft jourso Z nalled therein having a crank end; means provided whereby the rotation of said crank end actuatesthe throttleflever at a'pre determined point in the rotation thereof; an armrigidwith said shaft haying'a suitable rein extending therefrom; a, ratchet wheel rotatably mounted on said shaft engaging with a ratchet carried by said arm; means detachably connecting said ratchet wheel to the tractor clutch lever and pawl means preventing recoil of said ratchet wheel. in a I '2. In atractor control,- in combination withthe tractor; a. bracket,a shaft journalled therein having a crank end a rod extendinghfrom thethrottle lever to "Sai fcrank end, said rod having a slotted end in which said crank end slides an arm rigid with'said shaft hav ng a suit'able rein extending therefromga. ratchet wheel 'rotat ably niounted on said sha-ft'engaging with a ratchet carried by' said" arm ma-asidetachably connecting said ratchet wheel to the tractor clutch lever and l awl means preventing recoil of said ratchet wheel." 3. In a tractor control, in combination with the tractor, a bracket, a shaft j ournalled therein having acranki end j'means provided upon the rotation of said crank end to actuate the throttle lever at a pie determined point in the rotation thereof; an arm rigid with said shaft havinga suit- ,able flexible rein V extending therefrom, a ratchet wheel rotatably mountedon said shaft having engagement with a ratchet carried by said armi a pin extension from i said ratchet wheel; a connecting r'od'carried by sai'dpin extension detachably engaging the clutch lever, and pawl means'preventing recoil of said ratchet wheel" if ,4 In a tractor control, in combination with. the tractor, a' bracket, shaft journalled in said bracket having'a crank end, means provided whereby the rotation of said crank en actuates the throttleflever at a predetermined point in therotation thereof; an arm rigid with'said shaft having a.

suitable flexible rein extending therefrom;

' a ratchet 'Wheel rotatably mounted on'said pawl cam face toeffect disengagement 10 1 shaft engaging with a ratchet carried by thereof.

said arm, means detachably connecting said Signed at Essex, Ontario, Canada, this ratchet Wheel to the clutch lever, a spring fifth dav of February, 1923.

held pawl supported from said bracket and engaging said ratohetvvwheel; a spring held JAMES ROBERT KENDRIOK 'block, slidable in an arm other than the Witnesses:

aforesaid arm and having a rigid pin D. D. METQALF,

' adapted upon rotation to engage a lateral H. R. JOHNSTON. 

